下列不属于脑脊液功能的是（ ）。.

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31126' and id < 2501802 and id<>'2501802' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31126' and id > 2501802 and id<>'2501802' order by id asc limit 5